permission denied to copy database

[canassa]

I got this error when trying to snapshot a Postgres database:

Snapshotting database admin_panel
Traceback (most recent call last):
  File "/home/cesar/venv/lib/python3.4/site-packages/sqlalchemy/engine/base.py", line 1139, in _execute_context
    context)
  File "/home/cesar/venv/lib/python3.4/site-packages/sqlalchemy/engine/default.py", line 450, in do_execute
    cursor.execute(statement, parameters)
psycopg2.ProgrammingError: permission denied to copy database "admin_panel"

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/cesar/venv/bin/stellar", line 9, in <module>
    load_entry_point('stellar==0.4.3', 'console_scripts', 'stellar')()
  File "/home/cesar/venv/lib/python3.4/site-packages/stellar/command.py", line 279, in main
    stellar()
  File "/home/cesar/venv/lib/python3.4/site-packages/click/core.py", line 716, in __call__
    return self.main(*args, **kwargs)
  File "/home/cesar/venv/lib/python3.4/site-packages/click/core.py", line 696, in main
    rv = self.invoke(ctx)
  File "/home/cesar/venv/lib/python3.4/site-packages/click/core.py", line 1060, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/cesar/venv/lib/python3.4/site-packages/click/core.py", line 889, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/cesar/venv/lib/python3.4/site-packages/click/core.py", line 534, in invoke
    return callback(*args, **kwargs)
  File "/home/cesar/venv/lib/python3.4/site-packages/stellar/command.py", line 70, in snapshot
    app.create_snapshot(name, before_copy=before_copy)
  File "/home/cesar/venv/lib/python3.4/site-packages/stellar/app.py", line 120, in create_snapshot
    table.get_table_name('master')
  File "/home/cesar/venv/lib/python3.4/site-packages/stellar/operations.py", line 65, in copy_database
    from_database
  File "/home/cesar/venv/lib/python3.4/site-packages/sqlalchemy/engine/base.py", line 906, in execute
    return self._execute_text(object, multiparams, params)
  File "/home/cesar/venv/lib/python3.4/site-packages/sqlalchemy/engine/base.py", line 1054, in _execute_text
    statement, parameters
  File "/home/cesar/venv/lib/python3.4/site-packages/sqlalchemy/engine/base.py", line 1146, in _execute_context
    context)
  File "/home/cesar/venv/lib/python3.4/site-packages/sqlalchemy/engine/base.py", line 1341, in _handle_dbapi_exception
    exc_info
  File "/home/cesar/venv/lib/python3.4/site-packages/sqlalchemy/util/compat.py", line 202, in raise_from_cause
    reraise(type(exception), exception, tb=exc_tb, cause=cause)
  File "/home/cesar/venv/lib/python3.4/site-packages/sqlalchemy/util/compat.py", line 185, in reraise
    raise value.with_traceback(tb)
  File "/home/cesar/venv/lib/python3.4/site-packages/sqlalchemy/engine/base.py", line 1139, in _execute_context
    context)
  File "/home/cesar/venv/lib/python3.4/site-packages/sqlalchemy/engine/default.py", line 450, in do_execute
    cursor.execute(statement, parameters)
sqlalchemy.exc.ProgrammingError: (psycopg2.ProgrammingError) permission denied to copy database "admin_panel"
 [SQL: '\n                CREATE DATABASE "stellar_69dc3d044d9f1154" WITH TEMPLATE "admin_panel";\n

After some Googling, I managed to fix the problem running this query:

update pg_database set datistemplate = true where datname = 'admin_panel';

But I am not sure if that's an optimal solution

[quantus]

I can't replicate the issue with my current setup and I don't have time + motivation to start playing with different postgres permission settings to replicate the issue.

I do agree that the stellar behaves in a really bad way in this case. I would happily merge a PR that somehow fixes the issue, or just lets the user know about the permission issue.

Ps. Sorry for late response.